WHY WE FIGHT is a series of seven films commissioned by the United States government during World War II to justify to U.S. soldiers their country's involvement in the war. Later on, they were also shown to the U.S. public to persuade them to support U.S. involvement in the war.
Most of the films were directed by Frank Capra. The series faced a tough challenge: convincing a non-interventionist nation of the need to become involved in the war and ally with the Soviets, among other things.
WHY WE FIGHT was edited primarily by William Hornback, although some parts were re-enacted "under War Department supervision" if there was no relevant footage available. The animated portions of the films were produced by the Walt Disney Studios.
In 2000, the United States Library of Congress deemed the films "culturally significant" and selected them for preservation in the National Film Registry.